I know how I would do it without getting wet.
Yesterday I helped my good friend put in his 60 ft dock, 6 10x 3 sections. He had a semi-dry suit on and I had on a 3mil wetsuit. 4 hrs in 44 degree water, with both of us having to dunk down to pick up a dropped nut in 4 ft water depth. Brrrrrrrr.
So how are we going to do it next year? Hire someone !!!!!!